XL Group plc to Announce First Quarter 2013 Results on Thursday, May 2, 2013

DUBLIN, IRELANDMon Apr 8, 2013 —

XL Group plc (“XL” or the “Company”) (NYSE: XL) announced today that it intends to release its First Quarter 2013 results after the close of regular stock market trading hours on Thursday, May 2, 2013.A conference call to discuss the Company’s results will be held at 5 p.m. Eastern Time on Thursday, May 2, 2013.

The conference call can be accessed through a listen-only dial-in number or through a live webcast. To listen to the conference call, please dial (210) 795-0624 or (866) 617-1526: Passcode: “XL GLOBAL”.The webcast will be available at www.xlgroup.com and will be archived on XL’s website from approximately 9:00 p.m. Eastern Time on May 2, 2013, through midnight Eastern Time on June 2, 2013.A telephone replay of the conference call will also be available beginning at approximately 9:00 p.m. Eastern Time on May 2, 2013, until midnight Eastern Time on June 2, 2013, by dialing (203) 369-3858 or (800) 937-2485.

About XL Group plc

XL Group plc (NYSE:XL), through its subsidiaries, is a global insurance and reinsurance company providing property, casualty and specialty products to industrial, commercial and professional firms, insurance companies and other enterprises throughout the world. XL is the company clients look to for answers to their most complex risks and to help move their world forward. Its principal offices are located at No.1 Hatch Street Upper, 4th Floor, Dublin 2, Ireland. To learn more, visit www.xlgroup.com